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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Milk is 15% ________ and 85% __________.






2. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






3. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






4. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






5. Failure to have both testis (gonads) descend






6. Why does estrus happen before ovulation?






7. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






8. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






9. (male) pushes the testes outward toward the legs for a cool-down off of the body






10. 14-19 (17) days






11. Allows extension of penis without fibro-elastic penis






12. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






13. Front feet and head first. (except for hogs and dogs)






14. (male) pushes the testes upward toward the body for warmth or protection






15. Parturition is controlled by...






16. Front feet and head first. (except for hogs and dogs)






17. Why Dairy calves are fed powdered milk.






18. What makes the milk flow through the mammary glands?






19. 1-3 days






20. Milk is 15% ________ and 85% __________.






21. Milk ~305 days - dry 60 days prior to calving






22. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






23. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






24. What about the sperm for a bull which has been castrated but still has testicles?






25. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






26. (LH) causes female's egg to break (her period)






27. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






28. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






29. 30 hours after estrus begins






30. Not under a timeline - cow can not be sold as steak






31. Scar tissue plugs up chambers of udder






32. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






33. Milk ~305 days - dry 60 days prior to calving






34. (FSH) causes egg to mature in females






35. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






36. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






37. Important 'landmark' during palpation






38. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






39. Sperm is produced here






40. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






41. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






42. Failure to have one testis (gonad) to descend






43. 10-37 (21) days






44. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






45. Provide nourishment for the developing sperm






46. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






47. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






48. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






49. 19-23 (21) days






50. % of fat in milk. makes cheeses and ice cream. regulates cost of milk